org.apache.hudi.org.apache.hadoop.hbase.regionserver.FlushAllLargeStoresPolicy Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.regionserver;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.yetus.audience.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A {@link FlushPolicy} that only flushes store larger a given threshold. If no store is large
* enough, then all stores will be flushed.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)
public class FlushAllLargeStoresPolicy extends FlushLargeStoresPolicy {
private static final Logger LOG = LoggerFactory.getLogger(FlushAllLargeStoresPolicy.class);
@Override
protected void configureForRegion(HRegion region) {
super.configureForRegion(region);
int familyNumber = region.getTableDescriptor().getColumnFamilyCount();
if (familyNumber <= 1) {
// No need to parse and set flush size lower bound if only one family
// Family number might also be zero in some of our unit test case
return;
}
setFlushSizeLowerBounds(region);
}
@Override
public Collection selectStoresToFlush() {
// no need to select stores if only one family
if (region.getTableDescriptor().getColumnFamilyCount() == 1) {
return region.stores.values();
}
// start selection
Collection stores = region.stores.values();
Set specificStoresToFlush = new HashSet<>();
for (HStore store : stores) {
if (shouldFlush(store)) {
specificStoresToFlush.add(store);
}
}
if (!specificStoresToFlush.isEmpty()) {
return specificStoresToFlush;
}
// Didn't find any CFs which were above the threshold for selection.
if (LOG.isDebugEnabled()) {
LOG.debug("Since none of the CFs were above the size, flushing all.");
}
return stores;
}
@Override
protected boolean shouldFlush(HStore store) {
return super.shouldFlush(store) || region.shouldFlushStore(store);
}
}